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Guru3D.com » News » Seagate going for 18TB HDDS next year

Seagate going for 18TB HDDS next year

by Hilbert Hagedoorn on: 03/16/2017 03:46 PM | source: | 7 comment(s)
Seagate going for 18TB HDDS next year

Seagate will be expanding their HDD line with an 18 Terabyte model, and would be doing so next year. To reach this incredible storage volume they would make a move towards SMR, TDMR and HAMR technologies.

The news was posted by through fudzilla who had a chat with senior executives familiar with Seagate’s research and development plans, the company plans to fine-tune the next three years of its HDD developments using shingled magnetic recording (SMR), two-dimensional magnetic recording (TDMR), and heat-assisted magnetic recording (HAMR):

The need for higher capacity drives, especially for lots of unstructured data in server environments, have produced a need to develop more efficient drive recording technologies. Perpendicular magnetic recording (PMR) was introduced in 2005 and brought needed areal density decreases. Then in 2013, Seagate began shipping the first shingled magnetic recording (SMR) drives that increased overall disk capacity by about 25 percent over non-shingled storage. The company is now confirming plans to release nearline HDDs with 12TB capacity within the coming weeks or months. Market watchers expect that once SMR-based technology begins to mature, the drives will be able to replace PMR-based drives most frequently and at capacities of almost double what PMR has been able to provide. According to company executives, 18TB SMR drives are currently in development and are expected to make an arrival in 2018.

TDMR drives arriving next quarter

Another technology currently under development, two-dimensional magnetic recording (TDMR), will also help the company increase areal density by around 5 to 10 percent. As tracks get narrower, an effect called magnetic inter-track interference (ITI) makes it increasingly hard for heads to perform read operations. TDMR uses two or more heads to read data from several earby tracks at the same time, improving the overall signal-to-noise ratio delivered to the controller. By using an array of readers per head, there should also be a noticeable performance improvement for HDDs, even if not quite on the same level as SSDs. With TDMR, however, the array of heads increases bandwidth requirements for the controller along with the amount of information it needs to process, so these platforms may initially come at a slight cost premium. Seagate plans to have some of the first drives introduced next quarter.

16TB HAMR HDDs arriving next year

Now that PMR technology has gone through several generations, there is only so much room left in bits per square inch before a new read-write head technology must be developed to accommodate smaller surface areas. Seagate describes SMR as a stop gap recording technology, where reads can be made smaller, but write heads cannot. The downside is that if data has to be rewritten, then track blocks have to be reconstructed, which takes time and lengthens disk write performance.

This is where heat-assisted magnetic recording (HAMR) comes into play, as it allows the drive heads to be made smaller to match the read tracks. A new and more stable recording medium is used that allows for writing on materials with higher coercivity and smaller grain size.

While PMR drives have an areal density of a few hundred gigabits per square inch, HAMR drives will be capable of delivering 5TB per square inch. As of 2016, no hard drives on the market were using HAMR, but Seagate expects the first 16TB HAMR HDDs to make an arrival in 2018 at the earliest.



Seagate going for 18TB HDDS next year




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thatguy91
Senior Member



Posts: 6644
Joined: 2010-08-27

#5407833 Posted on: 03/16/2017 04:22 PM
Hard drive prices and tech haven't changed much in the last couple of years or so, hopefully this will bring prices down and capacity up.

Silva
Senior Member



Posts: 1358
Joined: 2013-06-04

#5407835 Posted on: 03/16/2017 04:28 PM
All of that data on a single HDD makes me nervous about failure.
It's great that technology is finally moving forward (again) because I'm tired of waiting for prices to come down. My 2Tb WD Green is old as **** and I need to back up the data.

SHS
Senior Member



Posts: 472
Joined: 2001-05-02

#5407843 Posted on: 03/16/2017 04:46 PM
All of that data on a single HDD makes me nervous about failure.
It's great that technology is finally moving forward (again) because I'm tired of waiting for prices to come down. My 2Tb WD Green is old as **** and I need to back up the data.
That why it a good idea to buy two drives backup the first drive on to 2nd drive

GhostXL
Senior Member



Posts: 6062
Joined: 2004-10-30

#5407845 Posted on: 03/16/2017 04:47 PM
All of that data on a single HDD makes me nervous about failure.
It's great that technology is finally moving forward (again) because I'm tired of waiting for prices to come down. My 2Tb WD Green is old as **** and I need to back up the data.

You should be alright with the capacity part. They really worked out the issues of holding high capacities. I think more it's current system compatibility and if the drive is just faulty to begin with.

Been running a Toshiba 5TB 7200 RPM, 128MB Cache for a good while now. Flawless drive. So I think it's going to be a luck of the draw like most HDD's these days. You get a good one..or you don't despite the capacity.

I've read about people getting faulty drives, the same as my 5TB. So you know, you see that everywhere. Good ones bad ones. I see more good than bad thankfully.

Long story short, you don't need to worry about the capacity being the problem maker.

That why it a good idea to buy two drives backup the first drive on to 2nd drive

This is true. He gets a new one, he can even keep his trusty 2TB to backup the backups.

RedSquirrel
Member



Posts: 81
Joined: 2017-03-06

#5408067 Posted on: 03/16/2017 11:18 PM
I still remember buying a '40GB' deathstar HD and seeing only 37GB available, I imagine it'd be pretty harsh with an 18TB drive O_o Amazes me how much they keep cramming into these drives via magneto-mechanical means, in rust we trust for bulk storage.

Can't see myself buying one though, cost aside, infact I first bought a 1TB drive back in 2008 IIRC, and 9 years later I'm still using 1 or 2TB drives for things not needed on the ssd :/

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